Enum IsleConstructor

enum IsleConstructor {
    RetMemorySideEffect,
    RetGpr,
    RetXmm,
    RetValueRegs,
    NoReturnSideEffect,
    ProducesFlagsSideEffect,
    ConsumesFlagsReturnsGpr,
}

Different kinds of ISLE constructors generated for a particular instruction.

One instruction may generate a single constructor or multiple constructors. For example an instruction that writes its result to a register will generate only a single constructor. An instruction where the destination read/write operand is GprMem will generate two constructors though, one for memory and one for in registers.

Variants

RetMemorySideEffect

This constructor only produces a side effect, meaning that the instruction does not produce results in registers. This may produce a result in memory, however.

RetGpr

This constructor produces a Gpr value, meaning that the instruction will write its result to a single GPR register.

RetXmm

This is similar to RetGpr, but for XMM registers.

RetValueRegs

This “special” constructor captures multiple written-to registers (e.g. mul).

NoReturnSideEffect

This constructor does not return any results, but produces a side effect affecting EFLAGs.

ProducesFlagsSideEffect

This constructor produces no results, but the flags register is written, so a ProducesFlags value is returned with a side effect.

ConsumesFlagsReturnsGpr

This instructions reads EFLAGS, and returns a single gpr, so this creates ConsumesFlags.ConsumesFlagsReturnsReg.

Implementations

impl IsleConstructor

fn result_ty(&self) -> &'static str

Returns the result type, in ISLE, that this constructor generates.

fn conversion_constructor(&self) -> &'static str

Returns the constructor used to convert an AssemblerOutput into the type returned by Self::result_ty.

fn suffix(&self) -> &'static str

Returns the suffix used in the ISLE constructor name.

fn includes_write_only_reg_mem(&self) -> bool

Returns whether this constructor will include a write-only RegMem operand as an argument to the constructor.

Memory-based ctors take an Amode, but register-based ctors don’t take the result as an argument and instead manufacture it internally.

Trait Implementations

impl Clone for IsleConstructor

fn clone(&self) -> IsleConstructor

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for IsleConstructor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for IsleConstructor